This bentonite grout mixer plant for tunnels is specially designed for complex working conditions, which can not only meet various grouting needs such as post-grouting and high-pressure grouting but also easily cope with the task of double liquid grouting. It has powerful conveying capacity, compact structure, and simple operation. More importantly, this bentonite grout mixer plant for tunnels can run stably in harsh environments, such as flammable, explosive, strong radiation, dust, and large temperature differences.